根据所给要求,改写下列句子。每空格限填一词

1．They work on the farm with their parents every weekend．（改为一般疑问句）

    _________ they _________ on the farm with their parents every weekend?

2．Let’s take a picture in front of the fountain．（改为反意疑问句）

    Let’s take a picture in front of the fountain，_________ __________?

3．The Shanghai International Arts Festival is held once a year．（对画线部分提问）

    _________ _________ is the Shanghai International Arts Festival held?

4．He was very nervous．He couldn’t go on with the job interview．（合并为一句）

He was _________ nervous _________ go on with the job interview．

5．I have no idea how I can operate the new machine．（改为简单旬）

I have no idea _________ operate the new machine．

6．I'm going to make an early start in order not to miss the train．（保持句意基本不变）

    I’m going to make an early start __________ I won’t miss the train．